Roll and process of making same.



PATENTBD JUNE 2, 1908.

F. SHUMAN.

ROLL AND PROCESS OF MAKING SAME.

APPLICATION FILED JULY 20 1897.

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FRANK SHUMAN, OF PHILADELPHIA, PENNSYLVANIA.

ROLL AND PROCESS OF -MAKING SAME.

Specification of Letters Patent.

Patented. June 2, 1908.

Application filed July 20, 1897. Serial-No. 645,260.

- To all whom it may concern:

- tical sectional view illustrating one method 1 Be it known that I, FRANK SHUMAN, a citizen of the United States, .residing in Philadelphia, Pennsylvania, have invented certain Im rovements in Rolls and Processes of Ma ing Same, of which the following is a specification.

My invention relates tolcertain improve mentsin the manufacture of rolls especially adapted for. use in printing, embossing or calendering. Rolls for this class of work are now invariably made of copper and are usually solid and very expensive, not only on account of the cop er used, but owing to the fact that each roll has to beseparately engraved.

The object of my invention is to dispense with the use of solid copper rolls and the costly engraving process, and-to substitute therefor a thin copper cylinder having the'en- 'raving formed thereon by electrolating, as fully described hereafter, reference eing had to the accompanying drawings, in 'which:.

Figure 1, 1s a side view partly in section illustrating a printing roll made in accordance with my invention; Figs. 2, 3, 4 and 5, are views in section illustrating the process of making one of these rolls; Fig. 6, is a sectional view through one of the tubes before, being mounted to form a roll; Fig. 7, is a vertical sectional view of Fig. 5, illustrating the electro-plating process; Fig. 8, is a verof filling the roll; Fig. 9, is a, view showing a metallic head forming part of the roll; and Fig. 10, is a view showing a hard cement as a substitute for the metallic head.

The roll consists essentially of a cylindrical shell A which is made by electro plating, the

design .on the shell being also formed by electrolatin a spindle B centrally located within t e she l and filling material C between the shell and the mandrel.

This filling ma terial not only acts as a backing for the thin metallic shell, but also acts as a means for securing the shell to the mandrelf'lhe' mandrel may be square as shown in the drawings, or may be otherwise shaped or provided with projections 01' depressions which will lock with the filling material so that the shell and mandrel will be secured together as a unit.* Thefilling material I. prefer to use 1s plaster of pans or .a com-' tern D, Fig. 2, this pattern may be ma e of soft metal, ora composition such as sealing wax, any material capable of being engrave ori1 impressed may be used for this pattern. T e E- which, in the present instance, is made in three sections so that it can be readily removed from the pattern, andjmounted be tween the sections are thin sheets of zinc or other metal which extend to the pattern. When wax, plaster of paris or other material under ressure or vacuum is poured in the space etween the pattern and the box it will be divided into three sections by the sheets of zinc, and when the material is set or cooled the box is uncoupled and the sections removed from the pattern and rear- The process of manufacturing the roll is as v follows :I first engrave the design on a atattern is mounted centrally in a box I ranged without the pattern, as in Fig. 3, they action of the electric current the surface of the mold is electro-plated to the thickness desired, forming a cylinder with a design thereon, as shown in Fig. 6. Inorder to protect the exterior of the mold I preferably coat'it with paraffin or other. suitable material. 7 By making the roll as described above I am enabled to usethe fine or smooth surface of the plating on the periphery of the roll and the coarse surface on the inside, which acts asa means to lock the shell to the filling material, as it will be understood that the electro deposited metal is practically without grain at the surface next to the mold and. coarse on the-opposite side.

der is removed from the mold it is mounted on the mandrel B between two removable heads I; b; as in Fig.

After the cyl 8, the lower one of these heads is solid while the upper head .has two perforations, one forming the pouring openin and the other. for the es'ca e of air.

ready-for useq; If an extra strong roll is de- The terminals are then 7 connected to a battery or dynamo and by the J The ing material is then poure into the space between the man-1 drel andthe shell and after the material has set the heads are removed and the roll is then sired then the heads may form the permanent part of the roll as shown in Fig. 9, the

, heads in this instance fitting within the shell,

or in some cases where a fragile filling is used a hard cement head may be formed on each end of the roll, as shown in Fig. 10.

While I prefer to form the design pattern by electro-plating, a perfectly plain roll may be formed in the manner described and then after being mounted a design can be cut 'can be formed the design without resorting to the expensive engraving process for each pensive roll as one pattern will ber of rolls. 7 I

It will be understood that in allwall paper, oil cloth and calico printing establishments large quantities of these rolls are made and stored away until used, consequently considerable money is locked up in material that cannot be used except at intervals.

By the use of my improved roll the exrolls are discarded and new rolls can e made when wanted by simply keeping on hand the original pattern roll which need not be made of copper.

I claim as my invention: 1. The combination in. a roll for printing or other pur oses, of the central mandrel, a metallic shel answer for any num-.

the finished roll carried by said mandrel, and a plaster composition filling material intertially as described.

' thereon, removing the surrounding said mandrel, annular disks or shoulders forming heads for the shell, said filling material serving as a solid backing for the shell and as a means of keying the shell to the mandrel, substan- 2. The combination in a roll for printing or other purposes, of the central mandrel, an embossed shell formed by electro-plating, said mandrel having at its ends annular disks or shoulders formin heads'for the finished roll, and a plastic fil ing material interposed between the shell and the mandrel, said filling material serving as a solid backing for the shell of the roll and also as a means of securing'the shell to the mandrel, one of said heads having openings for the introduction of said filling material, substantially as described. 1

3. The process herein described of making rolls, said process consisting in first making a pattern core with a design thereon, mounting'said pattern ina casing made in two or more sections, with plates between the sections extending to said pattern, pouring wax or equivalent material between the casing and the pattern to form a mold, detaching the sections of the casing with the mold pattern, reassembling the inner surface of the the sections, coating lumbago, electro-plating the said mold with surface to orm a shell of electro-plated metal filling with the design thereon, and finally said shell with a backing material, substantially as set forth.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

FRANK SHUMAN.

, Witnesses:

WILL. A. BARR, Jos. H. KLEIN. 

